Efficient Monte-Carlo sampling of metastable systems using non-local collective variable updates

该论文提出了一种针对非线性集体变量和欠阻尼朗之万动力学的非局部更新蒙特卡洛采样通用算法,通过证明其可逆性并展示其在数值示例中的显著性能提升,有效解决了复杂分子系统的亚稳态采样难题,并借助生成式机器学习扩展了其在高维真实分子系统中的应用潜力。

Christoph Schönle, Davide Carbone, Marylou Gabrié, Tony Lelièvre, Gabriel StoltzWed, 11 Ma🔬 physics

Computing Nonequilibrium Transport from Short-Time Transients: From Lorentz Gas to Heat Conduction in One Dimensional Chains

该论文通过对比传统时间平均法,验证了瞬态时间关联函数(TTCF)方法在计算洛伦兹气体和一维非谐链等系统的非平衡输运系数时,不仅在线性与非线性区域具有更高精度和更低计算成本,还能有效处理非遍历情形并揭示相变特征。

Davide Carbone (Laboratoire de Physique de l'Ecole Normale Superieure, ENS Universite PSL, CNRS, Sorbonne Universite, Universite de Paris, Paris, France), Vincenzo Di Florio (MOX Laboratory, Department of Mathematics, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy, CONCEPT Lab, Fondazione Istituto Italiano di Tecnologia, Via E. Melen 83, Genova, 16152, Italy), Stefano Lepri (Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy, INFN, Sezione di Firenze, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy), Lamberto Rondoni (INFN, Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy, Dipartimento di Scienze Matematiche, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)Wed, 11 Ma🔢 math-ph

Tensor-network methodology for super-moiré excitons beyond one billion sites

该论文提出了一种结合张量网络编码与切比雪夫算法的实空间方法,成功突破了传统计算限制,实现了对包含超过十亿个格点(希尔伯特空间维度达$10^{18}$)的准晶和超莫尔激子体系光谱的直接计算,从而能够同时解析原子尺度与介观尺度的激子物理特性。

Anouar Moustaj, Yitao Sun, Tiago V. C. Antão, Lumen Eek, Jose L. LadoWed, 11 Ma⚛️ quant-ph

Aliasing and phase shifting in pseudo-spectral simulations of the incompressible Navier-Stokes equations

本文针对伪谱法模拟不可压缩纳维 - 斯托克斯方程中传统 2/3 截断去混叠计算成本过高的问题,系统推导并分析了相位移动去混叠机制,在开源框架 Fluidsim 中首次实现了多种相关算法,并通过测试证明该方法在保持精度的同时能显著提升计算效率(最高提速 3 倍)。

Clovis Lambert, Jason Reneuve, Pierre AugierWed, 11 Ma🔬 physics

When velocity autocorrelations mirror force autocorrelations: Exact noise-cancellation in interacting Brownian systems

该论文从理论上严格证明了在热平衡态下,由于速度自相关函数与力自相关函数呈严格负比例关系,导致交叉关联项消失,从而使噪声消除算法成为精确方法,而在非平衡态下该交叉关联项不为零,可作为区分平衡与非平衡态的判据并指导算法修正。

Anton Lüders, Suvendu Mandal, Thomas FranoschWed, 11 Ma🔬 cond-mat

A multi-phase-field model for fiber-reinforced composite laminates based on puck failure theory

本文提出了一种基于 Puck 失效理论并结合网格叠加法的多相场模型,通过引入两个独立的相场变量和特征长度尺度,成功实现了对不同铺层方向纤维增强复合材料层合板中纤维与基体主导失效模式的独立触发与相互作用模拟,并在多种基准算例中验证了其预测精度。

Pavan Kumar Asur Vijaya Kumar, Rafael Fleischhacker, Aamir Dean, Heinz E PettermannWed, 11 Ma🔬 physics

Modeling resonance characteristics of the Chang'e-7 lander modulated by solar panel rotation under lunar south-pole thermal environment

该研究建立了嫦娥七号着陆器的高保真有限元模型,揭示了在月球南极极端热环境下,太阳能帆板旋转与温度变化(-180°C 至 +80°C)导致其基频在 0.64 Hz 至 0.87 Hz 范围内显著漂移(主要由热致刚度变化驱动),这一现象与地震观测频段重叠,为未来从月球南极地震数据中识别和滤除着陆器噪声提供了关键理论依据。

Lei Zhang, Jinhai ZhangWed, 11 Ma🔬 physics

Impact of magnetic fields on polaron dynamics in low-dimensional systems

该论文通过数值求解离散非线性方程组,研究了外加磁场对强电子 - 晶格相互作用下准一维材料中大极化子(孤子)动力学的影响,揭示了磁场效应不仅取决于场强,还受决定孤子能量、振幅和局域化宽度的系统参数制约,并进一步分析了供体复合物在链上产生的极化子受磁场影响的特性。

Larissa Brizhik, B. M. A. G. PietteWed, 11 Ma🌀 nlin

DFT calculations of magnetocrystalline anisotropy energy with fixed spin moment

该论文提出利用全相对论固定自旋矩(FR-FSM)方法,通过构建磁各向异性能与自旋磁矩的关系曲线,有效调和了不同交换关联势计算结果的差异,并为预测材料最大磁各向异性能及优化合金成分以设计新型永磁体提供了实用框架。

Justyn Snarski-Adamski (Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland), Joanna Marciniak (Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland, Uppsala University, Uppsala, Sweden), Wojciech Marciniak (Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland, Poznan University of Technology, Poznan, Poland), Justyna Rychły-Gruszecka (Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland), Mirosław Werwinski (Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland)Wed, 11 Ma🔬 cond-mat.mtrl-sci

First Estimation of Model Parameters for Neutrino-Induced Nucleon Knockout Using Simulation-Based Inference

本文研究了基于模拟的推断(SBI)在中微子相互作用模型参数估计中的适用性,发现该方法在复现 MicroBooNE 合作组调优参数方面表现良好,且在使用原始实验数据时能获得比传统方法更优的拟合效果,同时还能有效近似 NuWro 等替代模拟。

Karla Tame-Narvaez, Steven Gardiner, Aleksandra Ciprijanovic, Giuseppe CeratiWed, 11 Ma⚛️ hep-ph

Differentiable Microscopy Designs an All Optical Phase Retrieval Microscope

该论文提出了名为“可微显微镜”(μ\partial\mu)的自上而下设计框架,通过数据驱动方法成功优化了全光学相位检索系统,并在多个数据集及实验验证中证明了其优于现有方法的性能。

Kithmini Herath, Hasindu Kariyawasam, Ramith Hettiarachchi, Udith Haputhanthri, Dineth Jayakody, Raja N. Ahmad, Azeem Ahmad, Balpreet S. Ahluwalia, Chamira U. S. Edussooriya, Dushan N. WadduwageTue, 10 Ma🔬 physics.optics